#include "game.h"

Game::Game()
{
    // Place the player with 10 initial charges onto x: 1, y: 1
    hero = std::make_unique<Hero>(1, 1, 10);

    // Generate level
    level = std::make_unique<Level>();

    main_window.create(sf::VideoMode(window_side, window_side), "SFML-Test Application", sf::Style::Default);
    main_window.setActive();
}

int Game::run()
{
    clock = std::make_unique<sf::Clock>();

    // To where player moved each step of the game loop
    Direction direction;

    // On the game loop
    while (main_window.isOpen())
    {
        // By default player doesn't move anywhere
        direction = Direction::None;

        sf::Event event;
        while (main_window.pollEvent(event))
        {
            if (event.type == sf::Event::Closed)
                main_window.close();

            // Handling keyboard activity
            if (event.type == sf::Event::KeyPressed)
            {
                // Move
                direction = onMoving(event.key.code);
            }
        }

        // Draw level
        renderMap(direction);

        main_window.display();
    }

    return EXIT_SUCCESS;
}

////////////////////////////////////////////////////

Direction Game::getDirection(sf::Keyboard::Key &key) const
{
    switch (key)
    {
    case sf::Keyboard::A:
    case sf::Keyboard::Left:
    case sf::Keyboard::Num4:
        return Direction::Left;

    case sf::Keyboard::W:
    case sf::Keyboard::Up:
    case sf::Keyboard::Num8:
        return Direction::Up;

    case sf::Keyboard::D:
    case sf::Keyboard::Right:
    case sf::Keyboard::Num6:
        return Direction::Right;

    case sf::Keyboard::S:
    case sf::Keyboard::Down:
    case sf::Keyboard::Num2:
        return Direction::Down;

    default:
        return Direction::None;
    }
}

Direction Game::onMoving(sf::Keyboard::Key &key)
{
    // Determine where to move
    const Direction direction = getDirection(key);

    if (direction != Direction::None)
    {
        // Save the initial coordinates
        coordinate initial_x, initial_y;
        hero->position(initial_x, initial_y);

        // Try to move hero
        hero->move(direction);

        // Save the new coordinates after moving
        coordinate attempt_x, attempt_y;
        hero->position(attempt_x, attempt_y);

        //////////////////////////

        // If the following cell is water
        if (level->isCellOfType(attempt_x, attempt_y, CellType::Water))
        {
            // Try to use one charge to place a bridge
            if (hero->useCharge())
                level->placeBridge(attempt_x, attempt_y);
            // If hero doesn't have enough charges, we move Hero back
            else
                hero->setPosition(initial_x, initial_y);
        }

        //////////////////////////

        // If the following cell is a charge
        if (level->isCellOfType(attempt_x, attempt_y, CellType::Charge))
        {
            // Hero picks up the charge; remove it from the map
            hero->refillCharges(1);
            level->removeCharge(attempt_x, attempt_y);
        }
    }

    return direction;
}

void Game::renderMap(const Direction direction)
{
    if (direction == Direction::None)
        return; // Player didn't move this step of loop, so map couldn't change

    const Map &map = level->mapArray();

    coordinate painter_x = 0, painter_y = 0;

    for (const Row &row : map)
    {
        for (const CellType &cell : row)
        {
            switch (cell)
            { // TO DO!!
            case CellType::Ground:
                ; break;
            case CellType::Charge:
                ; break;
            case CellType::Bridge:
                ; break;
            case CellType::Water:
            default:
                ;
            }

            // Move painter to next cell of row
            painter_x += cell_length;
        }

        // Move painter to next row of the map
        painter_x  = 0;
        painter_y += cell_length;
    }
}